WO2021000157A1 - Dispositif de génération de son - Google Patents

Dispositif de génération de son Download PDF

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Publication number
WO2021000157A1
WO2021000157A1 PCT/CN2019/094057 CN2019094057W WO2021000157A1 WO 2021000157 A1 WO2021000157 A1 WO 2021000157A1 CN 2019094057 W CN2019094057 W CN 2019094057W WO 2021000157 A1 WO2021000157 A1 WO 2021000157A1
Authority
WO
WIPO (PCT)
Prior art keywords
sound
yoke
fixed
hole
air
Prior art date
Application number
PCT/CN2019/094057
Other languages
English (en)
Chinese (zh)
Inventor
沈凯华
陈志臣
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声科技(新加坡)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 瑞声声学科技(深圳)有限公司, 瑞声科技(新加坡)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Priority to PCT/CN2019/094057 priority Critical patent/WO2021000157A1/fr
Priority to CN201921022540.4U priority patent/CN210351612U/zh
Publication of WO2021000157A1 publication Critical patent/WO2021000157A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • This application relates to the field of electronic equipment, and in particular to a sound emitting device.
  • the central magnet adopts the maximization design, and this design will prevent the air under the dome from being discharged in time and effectively, which affects the vibration of the sound film and causes the split vibration of the sound device to increase. Frequency performance and stability deteriorate.
  • the present application provides a sound generating device, including a basin frame, a vibration system fixed to the basin frame, and a magnetic circuit system.
  • the magnetic circuit system includes a magnetic yoke fixed to the basin frame and a magnetic circuit system.
  • the vibration system includes a sound diaphragm fixed on the basin frame, the sound diaphragm includes a diaphragm fixed on the basin frame and a system attached to the diaphragm close to the magnetic circuit
  • the sounding device further includes a through slot that is arranged sequentially through the yoke and the magnet part, and the sounding device further includes An air-permeable spacer installed on the magnetic circuit system and corresponding to cover the through slot, and the through slot communicates with the gap and the outside through the air-permeable spacer.
  • the magnet part includes a main magnet installed in the middle of the yoke and a main magnet attached to the side of the main magnet away from the yoke.
  • Pole core, the through slot is arranged along the vibration direction of the vibration system, and the through slot includes a first through hole provided through the yoke, a second through hole provided through the main magnetic steel, and through the
  • the main pole core is provided with a third through hole, the first through hole, the second through hole, and the third through hole are coaxially arranged and the first through hole is located at the center of the yoke.
  • the air-permeable spacer covers any one of the first through hole, the second through hole, and the third through hole.
  • the air-permeable isolation member is a sound-absorbing cotton block, and the sound-absorbing cotton block is filled and fixed to the through groove.
  • the air-permeable isolator is a PET cover plate, and the PET cover plate is fixed on the side of the yoke away from the vibration system and covers the First through hole.
  • the present application also provides a loudspeaker box, including the above-mentioned sound emitting device, a lower shell with a receiving space, and an upper shell covering the lower shell.
  • the sound emitting device is accommodated in the receiving space and fixed in the housing.
  • the sound membrane is directly opposite to the lower shell and is arranged at intervals, and the upper shell completely covers the yoke.
  • the present application also provides a loudspeaker box, including the above-mentioned sound emitting device, a lower shell with a receiving space, and an upper shell covering the lower shell.
  • the sound emitting device is accommodated in the receiving space and fixed in the housing.
  • the sound membrane and the lower case are arranged directly opposite and spaced apart, the yoke is arranged close to the upper case, and the upper case is provided with an opening extending along the upper case at a position corresponding to the sound emitting device, The yoke is exposed through the opening
  • the sound generating device provided in this application has the following advantages:
  • the air under the dome can be discharged in time by arranging through slots that penetrate the pole core, the main magnet and the yoke;
  • the leakage can be adjusted by setting the sound-absorbing cotton
  • FIG. 1 is a perspective view of a sound generating device according to Embodiment 1 provided by this application;
  • Figure 2 is an exploded view of the sound emitting device in Figure 1;
  • Figure 3 is a cross-sectional view taken along line III-III in Figure 1;
  • FIG 4 is another perspective view of the sound device according to Embodiment 1 provided by this application.
  • FIG. 5 is a perspective view of the sound emitting device of Embodiment 2 provided by this application.
  • Figure 6 is a cross-sectional view taken along line VI-VI in Figure 5;
  • FIG. 7 is a perspective view of the sound emitting device of Embodiment 3 provided by this application.
  • FIG. 8 is a perspective view of the sound emitting device of Embodiment 4 provided by this application.
  • Figure 9 is a cross-sectional view taken along line VIIII-VIIII in Figure 8.
  • Figure 10 is a structural diagram of a loudspeaker box using the sound emitting device in Figures 1 and 5;
  • Fig. 11 is a structural diagram of a loudspeaker box using the sound-producing monomer in Fig. 8.
  • FIG. 1 is a perspective view of the sound emitting device of Embodiment 1 provided in this application
  • FIG. 2 is an exploded view of the sound emitting device of Embodiment 1 provided in this application Figure
  • Figure 3 is a cross-sectional view taken along the line III-III in Figure 1
  • Figure 4 is another perspective view of the sound device of Example 1 provided by this application
  • Figure 10 is a speaker box structure using the sound device in Figures 1 and 5 Figure.
  • the present application provides a sound generating device 50, which includes a basin frame 1, a magnetic circuit system 2 fixed on the basin frame 1, and a vibration system 3.
  • the vibration system 3 includes a sound diaphragm 31, a voice coil 32, an auxiliary diaphragm 33, and a centering support piece 34.
  • the sound diaphragm 31 is fixed above the basin frame 1, and the voice coil 32 is fixed to the sound diaphragm. 31 below and drive the sound diaphragm 31 to vibrate and produce sound.
  • the voice coil 32 generates electromagnetic force with the magnetic circuit system 2 after being energized, thereby driving the sound diaphragm 31 to vibrate and produce sound
  • the auxiliary diaphragm 33 is fixed On the centering support piece 34, one end of the centering support piece 34 is fixed to the voice coil 32, and the other end is fixed to the basin frame 1.
  • the sound diaphragm 31 includes a diaphragm 312 fixed above the basin frame 1 and a dome 311 attached to the side of the diaphragm 312 close to the magnetic circuit system 2.
  • the magnetic circuit system 2 includes a magnetic yoke 21 fixed under the basin frame 1, a main magnet 22, a main pole core 221 attached to the surface of the main magnet 22, and a distance from the main magnet 22 A secondary magnet 23 and a secondary pole core 231 attached to the surface of the secondary magnet 23, the main magnet 22, the main pole core 221, the secondary magnet 23, and the secondary pole core 231 Together they constitute the magnet part 26.
  • the main magnet 22 and the auxiliary magnet 23 are both fixed to the yoke 21, wherein the main magnet 22 is located in the middle of the yoke 21, and the auxiliary magnet 24 is located in the main magnet.
  • the two sides of the steel 22 and the main magnetic steel 22 are arranged at intervals to form a magnetic gap, and the voice coil 32 is inserted into the magnetic gap.
  • Both the main pole core 221 and the secondary pole core 231 are made of magnetically permeable materials, which are used to conduct magnetically, converge the magnetic field, and improve the magnetic induction performance of the product.
  • the dome 311 is located above the magnetic circuit system 2, the dome 311 and the magnetic circuit system 2 are spaced apart to form a gap A, and the magnetic circuit system 2 is provided with a yoke 21, a
  • the main magnet 22 and the through slot 24 of the main pole core 221 communicate with the gap A and the outside.
  • the through slot 24 sequentially penetrates the yoke 21, the main magnetic steel 22 and the main pole core 221 along the vibration direction of the vibration system 3.
  • the yoke 21, the main magnetic steel 22, and the main pole core 221 are respectively provided with a first through hole that penetrates the through slot 24 along the vibration direction of the vibration system 3 and sequentially penetrates through it. 211, the second through hole 222 and the third through hole 2211.
  • the first through hole 211, the second through hole 222, and the third through hole 2211 are coaxially arranged and correspondingly arranged on the yoke 21, the main magnetic steel 22 and The middle part of the main pole core 21.
  • the number of the through grooves 24 can be multiple, and the size and position of the through holes 24 can be adjusted.
  • the through grooves 24 are used to discharge the dome in time when the sound membrane 31 vibrates.
  • the cross section of the through groove 24 is circular, square, trapezoidal, triangular, and so on.
  • the magnetic circuit system 2 further includes an air-permeable spacer 25 covering the through slot 24, and the through-slot 24 communicates with the gap A and the outside through the air-permeable spacer 25.
  • the breathable spacer 25 is a breathable sheet.
  • the air-permeable spacer 25 covers any one of the first through hole 211, the second through hole 222, and the third through hole 2211. Furthermore, the air-permeable spacer 25 can cover all the holes.
  • the first through hole 211 is fixed on the side of the magnetic yoke 21 away from the sound membrane 31; the air-permeable spacer 25 covers the first through hole 211 and is fixed on the magnetic yoke 21 close to the One side of the sound membrane 31, that is, the air-permeable spacer 25 is sandwiched between the yoke 21 and the main magnetic steel 22; the air-permeable spacer 25 can cover the second through hole 222 and be fixed On the side of the main magnet 22 away from the yoke 21, that is, the air-permeable spacer 25 is sandwiched between the main pole core 221 and the main magnet 22.
  • the air-permeable spacer 25 can be used to adjust the amount of air leakage in the sound device 50.
  • the present application also provides a speaker box 100, which includes the sound emitting device 50, a lower shell 30 having an accommodation space, and an upper shell 10 covering the lower shell 30, and the sound emitting device 50 is accommodated in the accommodation space Inside and fixed to the lower shell 30, and the sound membrane 31 and the lower shell 30 are arranged directly oppositely and spaced apart.
  • the upper shell 10 completely covers the yoke 21, so that the yoke 21 of the sound emitting device 50 cannot leak.
  • FIG. 5 is a perspective view of the sound emitting device according to Embodiment 2 provided by this application;
  • FIG. 6 is a cross-sectional view along the line VI-VI in FIG.
  • the air-permeable spacer in this embodiment adopts a sound-absorbing cotton block 25', and the sound-absorbing cotton block 25' is filled and fixed in the through groove 24, the sound-absorbing cotton block 25' can also be used To adjust the amount of air leakage in the sound generating device 50.
  • a speaker box 100 which includes the sound emitting device 50, a lower shell 30 having a receiving space, and an upper shell 10 covering the lower shell 30, and the sound emitting device 50 is accommodated in the receiving space. It is fixed to the lower shell 30 in the space, and the sound membrane 31 and the lower shell 30 are arranged directly oppositely and spaced apart.
  • the upper shell 10 completely covers the yoke 21, so that the yoke 21 of the sound emitting device 50 cannot leak.
  • FIG. 7 is a perspective view of the sound emitting device according to the third embodiment of the present application.
  • the air-permeable spacer in this embodiment adopts a PET cover plate 25", and the PET cover plate 25" covers the first through hole 211 and is fixed to the magnetic The side of the yoke 21 away from the sound membrane 31.
  • the PET cover plate 25" covers the air under the dome 311 and is fixed to the magnetic The side of the yoke 21 away from the sound membrane 31.
  • FIG. 11 is a structural diagram of a speaker box adopting the sound emitting unit in FIG. 8.
  • the air-permeable spacer of this embodiment adopts a transparent glass cover 25"', and the transparent glass cover 25"' is fixed on the yoke 21 The side away from the vibration system 3.
  • a speaker box 100 which includes the sound emitting device 50, a lower shell 30 having a receiving space, and an upper shell 10 covering the lower shell 30, and the sound emitting device 50 is accommodated in the receiving space. It is fixed to the lower shell 30 in the space, and the sound membrane 31 and the lower shell 30 are arranged directly oppositely and spaced apart.
  • the upper shell 10 is provided with an opening 101 penetrating therethrough. The shape of the opening 101 matches the shape of the yoke 21, and the yoke 21 of the sound generating device 50 leaks out through the opening 101 , And observe the vibration of the speaker box 100 through the opening 101 and the transparent glass cover 25'".
  • the sound generating device provided in this application has the following advantages:
  • the air under the dome can be discharged in time by arranging through slots that penetrate the pole core, the main magnet and the yoke;
  • the leakage can be adjusted by setting the sound-absorbing cotton

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

La présente invention concerne un dispositif de génération de son. Le dispositif de génération du son comprend un cadre de bassin, ainsi qu'un système de vibration et un système de circuit magnétique qui sont fixés au cadre de bassin. Le système de circuit magnétique comprend une culasse magnétique fixée au cadre du bassin, et une partie magnétique fixée à la culasse magnétique. Le système de vibration comprend une membrane sonore fixée sur le cadre du bassin, et la membrane sonore comprend une membrane de vibration fixée sur le cadre du bassin et un dôme fixé sur un côté de la membrane de vibration à proximité du système de circuit magnétique. Le dôme et le système de circuit magnétique sont espacés et forment un espace. Le dispositif de génération de son comprend en outre une rainure traversante qui est disposée de façon à pénétrer dans la culasse magnétique et la partie d'aimant en séquence. Le dispositif de génération de son comprend en outre un élément d'espacement perméable à l'air qui est installé dans le système de circuit magnétique et qui recouvre de manière correspondante la rainure traversante, et la rainure traversante place l'espace en communication avec l'extérieur au moyen de l'élément d'espacement perméable à l'air. Par rapport à la technologie associée, le dispositif de génération de son fourni par la présente invention permet à l'air au-dessous du dôme d'être déchargé rapidement et efficacement, ce qui permet d'améliorer les performances acoustiques.
PCT/CN2019/094057 2019-06-30 2019-06-30 Dispositif de génération de son WO2021000157A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2019/094057 WO2021000157A1 (fr) 2019-06-30 2019-06-30 Dispositif de génération de son
CN201921022540.4U CN210351612U (zh) 2019-06-30 2019-07-02 发声器件及扬声器箱

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/094057 WO2021000157A1 (fr) 2019-06-30 2019-06-30 Dispositif de génération de son

Publications (1)

Publication Number Publication Date
WO2021000157A1 true WO2021000157A1 (fr) 2021-01-07

Family

ID=70192587

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/094057 WO2021000157A1 (fr) 2019-06-30 2019-06-30 Dispositif de génération de son

Country Status (2)

Country Link
CN (1) CN210351612U (fr)
WO (1) WO2021000157A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112188372B (zh) * 2020-09-23 2022-04-29 瑞声新能源发展(常州)有限公司科教城分公司 扬声器及电子设备
CN112468939B (zh) * 2020-12-18 2022-06-03 瑞声新能源发展(常州)有限公司科教城分公司 一种发声装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020071590A1 (en) * 2000-12-09 2002-06-13 Samsung Electro-Mechanics Co., Ltd. Magnetic circuit of micro speaker
CN202818587U (zh) * 2012-08-27 2013-03-20 瑞声光电科技(常州)有限公司 微型扬声器
CN108810771A (zh) * 2018-08-14 2018-11-13 瑞声科技(新加坡)有限公司 发声器件
CN109348371A (zh) * 2018-09-30 2019-02-15 瑞声科技(新加坡)有限公司 发声器件

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020071590A1 (en) * 2000-12-09 2002-06-13 Samsung Electro-Mechanics Co., Ltd. Magnetic circuit of micro speaker
CN202818587U (zh) * 2012-08-27 2013-03-20 瑞声光电科技(常州)有限公司 微型扬声器
CN108810771A (zh) * 2018-08-14 2018-11-13 瑞声科技(新加坡)有限公司 发声器件
CN109348371A (zh) * 2018-09-30 2019-02-15 瑞声科技(新加坡)有限公司 发声器件

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